Abstract The theoretical and experimental results of the Moiré effect observed by superposing two... more Abstract The theoretical and experimental results of the Moiré effect observed by superposing two grids containing fractal Cantor structures are presented in this paper. It is also analysed the equivalence between the information obtained by the Fraunhofer ...
1. H ID D E N G R ID S A N D M O IR E P A T T E R N S Various methods exist to make photocopies o... more 1. H ID D E N G R ID S A N D M O IR E P A T T E R N S Various methods exist to make photocopies o f an original image. Photocopies are produced on opaque paper or transparent plastic sheets The original image can also be a slide that is projected onto the photocopier window or scanned. Each method has its proper form to generate the copied image. In general, matrix o f equally or stochastically spaced points or equally spaced lines are employed to reproduce half tones and colours. Figure 1 show's these two types o f hidden grids observed under microscope. Also, Figure 1 shows the Fraunhofer diffraction patterns o f both grids. The light sources used were a 15 cm k>sg filament lamp and a fluorescent tube. The matrix of points of the array o f lines can be considered as hidden grids that are incorporated to the image through the pkrtocopy process. Hidden grids can be used to encode information into the reproduced image in order to characterize some properties o f the original o...
... 5. G. Bennewitz and W. Paul, Z. Physik 139 (1954) 489. ... ON THE INTERACTION BETWEEN THE FIR... more ... 5. G. Bennewitz and W. Paul, Z. Physik 139 (1954) 489. ... ON THE INTERACTION BETWEEN THE FIRST AND SECOND POSITIVE LASER SYSTEMS IN N2 M. GA VAGLIA *, M. GALLARDO and CA MASSONE Departamento de F sica, Universidad Nacional de la Plata, La Plata ...
ABSTRACT: A Continuous Position Detector (CPD) is used to determine the position of the laser bea... more ABSTRACT: A Continuous Position Detector (CPD) is used to determine the position of the laser beam spot centroid. Comparison between CPD and CCD performances are analyzed. The light tracking instrument developed is introduced. Various applications of CPD light ...
Fil: Garavaglia, Mario Jose. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro C... more Fil: Garavaglia, Mario Jose. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico la Plata. Centro de Investigaciones Opticas (i); Argentina. Universidad Nacional de La Plata; Argentina. Provincia de Buenos Aires. Gobernacion. Comision de Investigaciones Cientificas; Argentina
This paper describes an alternative method for imaging the bile ducts during Cholecystectomy. X-R... more This paper describes an alternative method for imaging the bile ducts during Cholecystectomy. X-Rays are not needed. Positive results in open cholecystectomy are shown and the design of an IR endoscope is evaluated.
Abstract The theoretical and experimental results of the Moiré effect observed by superposing two... more Abstract The theoretical and experimental results of the Moiré effect observed by superposing two grids containing fractal Cantor structures are presented in this paper. It is also analysed the equivalence between the information obtained by the Fraunhofer ...
1. H ID D E N G R ID S A N D M O IR E P A T T E R N S Various methods exist to make photocopies o... more 1. H ID D E N G R ID S A N D M O IR E P A T T E R N S Various methods exist to make photocopies o f an original image. Photocopies are produced on opaque paper or transparent plastic sheets The original image can also be a slide that is projected onto the photocopier window or scanned. Each method has its proper form to generate the copied image. In general, matrix o f equally or stochastically spaced points or equally spaced lines are employed to reproduce half tones and colours. Figure 1 show's these two types o f hidden grids observed under microscope. Also, Figure 1 shows the Fraunhofer diffraction patterns o f both grids. The light sources used were a 15 cm k>sg filament lamp and a fluorescent tube. The matrix of points of the array o f lines can be considered as hidden grids that are incorporated to the image through the pkrtocopy process. Hidden grids can be used to encode information into the reproduced image in order to characterize some properties o f the original o...
... 5. G. Bennewitz and W. Paul, Z. Physik 139 (1954) 489. ... ON THE INTERACTION BETWEEN THE FIR... more ... 5. G. Bennewitz and W. Paul, Z. Physik 139 (1954) 489. ... ON THE INTERACTION BETWEEN THE FIRST AND SECOND POSITIVE LASER SYSTEMS IN N2 M. GA VAGLIA *, M. GALLARDO and CA MASSONE Departamento de F sica, Universidad Nacional de la Plata, La Plata ...
ABSTRACT: A Continuous Position Detector (CPD) is used to determine the position of the laser bea... more ABSTRACT: A Continuous Position Detector (CPD) is used to determine the position of the laser beam spot centroid. Comparison between CPD and CCD performances are analyzed. The light tracking instrument developed is introduced. Various applications of CPD light ...
Fil: Garavaglia, Mario Jose. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro C... more Fil: Garavaglia, Mario Jose. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico la Plata. Centro de Investigaciones Opticas (i); Argentina. Universidad Nacional de La Plata; Argentina. Provincia de Buenos Aires. Gobernacion. Comision de Investigaciones Cientificas; Argentina
This paper describes an alternative method for imaging the bile ducts during Cholecystectomy. X-R... more This paper describes an alternative method for imaging the bile ducts during Cholecystectomy. X-Rays are not needed. Positive results in open cholecystectomy are shown and the design of an IR endoscope is evaluated.
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